Identification_Information: Citation: Citation_Information: Originator: Norman J Page Originator: Warren J. Nokleberg Originator: Robert J. Miller Publication_Date: 2002 Title: Four georeferenced images (in TIFF and MrSID format) for the original Page and Nokleberg map (1974) of the Stillwater Complex and one TIFF image of the map explanation. Edition: Version 1.0 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: Map I-797 Publication_Information: Publication_Place: Menlo Park, CA Publisher: U. S. Geological Survey Online_Linkage: http://geopubs.wr.usgs.gov/i-map/i797 Description: Abstract: This collection of four georeferenced images (in TIFF and MrSID format) and one TIFF file provides raster images of the five map sheets comprising the Geologic map of the Stillwater Complex, Montana by Page and Nokleberg (1974). Paper copies of the four geologic map sheets and the explanation were scanned, and the geologic map sheets were georeferenced to the Montana State Plane South coordinate system. Purpose: This set of images was developed to provide georeferenced digital images of the 1:12000-scale geologic map (Page and Nokleberg, 1974) These images can be used in conjunction with the vector data files now available as part of the I-797 dataset. This database is not meant to be used or displayed at any scale larger than 1:12000 (for example, 1:2000). Supplemental_Information: Each georeferenced TIFF image consists of a package of two files with the extensions: .tif and .tfw (TIFF world file). Each georeferenced MrSID image consists of a package of three files with the extensions: sid, .sdw (MrSID world file), and .aux (ArcInfo 8.1 georeferencing information). The MrSID and TIFF files are listed below: i797origs1.* - Sheet 1 - east end of the Stillwater Complex i797origs2.* - Sheet 2 - east central part of the Stillwater Complex i797origs3.* - Sheet 3 - west central part of the Stillwater Complex i797origs4.* - Sheet 4 - west end of the Stillwater Complex i797origs5.tif - Sheet 5 - explanation of map symbols, correlation of map units and map unit descriptions used on Sheets 1 through 4. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1974 Currentness_Reference: publication date of original map Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -110.247638 East_Bounding_Coordinate: -109.736573 North_Bounding_Coordinate: 45.520307 South_Bounding_Coordinate: 45.327177 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: geology Theme_Keyword: geologic map Theme_Keyword: structural geology Theme_Keyword: chromite Theme_Keyword: platinum Theme_Keyword: ultramafic Theme_Keyword: layered mafic complex Place: Place_Keyword: Beartooth Mountains Place_Keyword: Montana Place_Keyword: Stillwater County Place_Keyword: Sweetgrass County Place_Keyword_Thesaurus: none Stratum: Stratum_Keyword: Stillwater Complex Stratum_Keyword: Madison Limestone Stratum_Keyword: Morrison Formation Stratum_Keyword: Kootenai Formation Stratum_Keyword: Ellis Group Temporal: Temporal_Keyword: Precambrian Temporal_Keyword: Mesozoic Temporal_Keyword: Cenozoic Access_Constraints: none Use_Constraints: This digital database is not meant to be used or displayed at any scale larger than 1:12,000. Any hardcopies utilizing these data shall clearly indicate their source. If the user has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. User specifically agrees not to misrepresent this data set, nor to imply the U.S. Geological Survey approved changes the user has made. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Robert J. Miller Contact_Organization: U. S. Geological Survey Contact_Position: geologist Contact_Voice_Telephone: 650 329-5407 Contact_Electronic_Mail_Address: rjmiller@usgs.gov Data_Set_Credit: R.J. Miller scanned printed paper copies of the map sheets (Page and Nokleberg, 1974) and then georeferenced them to the Montana State Plane South coordinate system to create GeoTIFF files for the geologic map sheets. The GeoTIFF files were then compressed into MrSID images. Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.1.0.642 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The images were compared visually with hard copy printed sheets to assure that features were legible. Completeness_Report: The five sheets comprising the printed (1974) version of Map I-797 have been scanned and are presented in their entirety at a scale of 1:12000. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The images were georeferenced after establishing a series of links. A link is defined by 1) selecting an intersection of easting and northing lines shown on the basemap of the image, 2) linking that point with a calculated position (Montana State Plane South coordinate system. The horizontal positional accuracy for the four registered images is as follows: Sheet 1: root mean square (RMS) error = 6.8 ft using 22 links, Sheet 2: root mean square (RMS) error = 16.9 ft using 32 links, Sheet 3: root mean square (RMS) error = 8.2 ft using 17 links, Sheet 4: root mean square (RMS) error = 5.8 ft using 24 links. The relatively large error in registering sheet 2 may be due to in part to a splice in the basemap used for this sheet. The splice has a NNE trend and occurs near the center of the sheet. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: N.J Page and W.N. Nokleberg Publication_Date: 1974 Title: Geologic map of the Stillwater Complex, Montana Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Map Issue_Identification: Map I-797 Publication_Information: Publication_Place: Reston, Virginia Publisher: U. S. Geological Survey Source_Scale_Denominator: 12000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1974 Source_Currentness_Reference: publication date of original map Source_Contribution: The maps in this publication were the only maps used to create the MrSID and TIFF images. Source_Citation_Abbreviation: Page and Nokleberg, 1974 Process_Step: Process_Description: R.J. Miller scanned printed paper geologic map sheets at 400 dpi on a Contex Ideal FSC-8000 color scanner. The Ideal scanner is capable of scanning at 400 dpi native resolution without utilizing interpolation. The scans were made as index color TIFF files allowing 256 colors. The images converted to a compressed TIFF format using ArcInfo 8.1, then registered using ArcMAP 8.1. The GeoTIFF files were further compressed into MrSID file format. Process_Date: 2002 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: raster Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: State Plane Coordinate System 1927 State_Plane_Coordinate_System: SPCS_Zone_Identifier: 2503 Lambert_Conformal_Conic: Standard_Parallel: 44.866667 Standard_Parallel: 46.400000 Longitude_of_Central_Meridian: -109.500000 Latitude_of_Projection_Origin: 44.000000 False_Easting: 2000000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.001190 Ordinate_Resolution: 0.001190 Planar_Distance_Units: survey feet Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.400000 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Instructions: This report is only available in the electronic format at URL = http://geopubs.wr.usgs.gov/i-map/i797 or via anonymous FTP from geopubs.wr.usgs.gov in the directory pub/i-map/i797. Distribution_Liability: The U.S. Geological Survey (USGS) provides these geographic data "as is". The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by USGS. This digital geologic map GIS of the Stillwater Complex, Montana, is not meant to be used or displayed at any scale larger than 1:12000 (for example, 1:2000). Metadata_Reference_Information: Metadata_Date: 20020516 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Robert J. Miller Contact_Position: geologist Contact_Address: Address_Type: mailing address Address: MS 901 Address: 345 Middlefield Rd City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650 329-5407 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: none Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile